Oh yeah, I dont wanna upset anybody, but when someone says "oop north" I just wanna cringe. We dont say that at all.
(its from either Yorkshire or Lancashire (which I dont even consider the north anyway).The North Starts at Berwick and Finishes at Gateshead. Anywhere south of Middlesborough is Europe....He he he.

(If anybody noticed my profile, I do live in Darlington. However I hail from a town called Blyth (which is about 15 miles north Newcastle).

So Does anybody have any strange or unusual words or slang that they use to confuse others?

Well, it doesn't have to be so big like the UK is. Even in Holland we have dialects that are only understandable for insiders who live there from birth. Like in the north we have Friesland, a mix of Keltic and Scandinavian, with some German and 'regular' Dutch for new words. Then there is Limburg (in the south), which is a mix of Flamish, German, some regular Dutch and a little French (heck, the provincial capital of Maastricht (you Brits all know that ) is almost closer to Paris then Amsterdam ) Even in cities dialects are spoken: in The Hague (where I live) the 'upstarts' speak a totally different Dutch to the workers of the street but as they rarely mix, it normally isn't an issue

As for English dialects, we all know the difference between UK English and its US counterpart

it is the same in Yorkshire. People in Leeds speak a different language to the people in Bradford, who speak a different language from those in say Goole. And that is different again to the variety of dialects in each of the Dales.The explanation is quite simple. in Leeds it is a mixture of Yiddish and Carribean, Bradford is Urdu and Farsi, Goole is a mixture of Polish and Haddock and the Dales is a mixture of the dialects displaced by the above and baa!